Improvement in combining springs for motive power



Patented Dec. 8, 1863.

UNITED STATES ATENT QEEICE.

GEORGE TERRY, on NEW ORK, n. Y.

IMPROVEMENT IN COMBINING SPRINGS FOR MOTIVE POWER.

Specification forming part of Letters Patent No. 40,866, datedDecember8,1863; antedated v. October 3, 1863.

To to whom it may concern:

Be it known that I, GEORGE TERRY, of the city, county, and State; of NewYork, have invented a new and useful arrangement of springs for clocksand for other purposes where used as a motor; and 1 do hereby declarethat the following is a full, clear, and exact description of the same,reference being had to the accompanying drawings, making a part of thisspecification, in which Figure 1 is an end view of my invention; Fig. 2,a plan or'topview of the same; Fig. 3, a. longitudinal section of thesame, taken in the linem m, Fig. 1.

Similar letters of reference indicate corresponding parts in the severalfigures.

This invention consists in combining aseries of springs-two or inore-insuch a manner thattheirstrenglh will be exerted or applied to one andthe same shaft, and the latter operated a length of time equal to thecapacity or strengthof an individual spring, multiplied by p the Wholenumber used-that is to say, if three seven-day-clock springs be combinedaccording to my invention, the combined springs will ,run twenty-onedays, and may be applied to a sevenday clock so as to convert thesanieinto a twenty-one-day clock without'changing or altering thegearing of the former.

A represents a shaft, which is fitted in a suitable framing, B, andwhich has placed loosely upon it two disks or plates, 0 (X, provided,respectively, with hubs a a, as shown in Fig. 3. I

D represents a coil-spring, the inner end of which is attachedpermanently to the axle A, and the outer endof said spring attached toan arm, I), which is secured to the disk or plate 0, near its edge.

E represents a coil spring, the inner end of which is attached prmanently to the hub a of the disk or plate he outer end of said springbeing attach; ,0 an arm, 0, which is secured to the disk or plate 0,near its edge.

F is a coil-spring, the inner end of which is attached to the hub a ofthe disk or plate 0, and the outer end attached to the framing B, asshown at d in Fig. 2. The shaft A has its hearings in plates e e e, thetwo former being at the ends of the framing. These'plates are connectedby rods f, to one of which the outer end of the spring F is attached. Onone end of the shaft A there is fitted aratchet, G, into which a pawl,H, catches. (See Fig. 1.)

From the above description it will be seen that when the shaft A isturned in a direction to wind up the springs the spring D will be actedupon directlyby the shaft A, the spring E acted upon from the spring 1),through the medium of the disk or plate 0 and its hub a, and the springFacted upon from the spring E, through the medium of the disk or plate 0and its hub a. The central spring, E, is controlled by the springs D F,through the intervention of. the disks or plates U O,and the threesprings, when the shaft A is turned in the proper direction, will bewound up, each one to a certain extent having an independent actionaccording to its tension, and still all so connected as to be wound upsimultaneously, and when wound up exert their power in a uniformcombined manner'on the shaft A, the power of the two springs F E beingtransmitted to the spring D, which is attached to the shaft A, throughthe medium of the disks or plates 0 O and theirhubs a a. Any number ofsprings may be thus combined, acorresponding number of disks or plates 00 being employed, and by this simple arrangement a prolonged or lastin gspring motor for driving machinery maybe obtained within a quite limitedspace, and one which will act aslong as each individual spring,multiplied by the number of springs used, For instance, if threeseven-day-clock springs be used, the three springs will act twen ty-onedays, with a power equal to that of one spring, and a seven-day clockmay be converted into a twenty-one-day clock without changing thegearing.

Having thus described my invention, what I claim asnew, and desire tosecure by Letters Patent, isg I .The combining or connecting together ofa series of springs in the manner substantially as herein described, sothat said springs will be wound up simultaneously by the turning ofacommon shaft, and when wound up be made to exert their power or act in auniform combined manner upon said shaft, as set forth.

GEORGE TERRY. Witnesses:

M. M. LWINcs'ro-N, J. W. OooMEs.

